Method of producing lens unit and method of producing imaging apparatus

Abstract

A method of producing a lens unit includes forming a layer by switching between a transmissive material that allows transmission of light and a light-shielding material that shields light, and stacking formed layers to form a lens from the transmissive material and forma barrel that holds the lens from the light-shielding material.

1 . A method of producing a lens unit, the method comprising:
 forming a layer by discharging a transmissive material that allows transmission of light and a light-shielding material that shields light in a manner to switch between the transmissive material and the light-shielding material, and by curing the discharged materials by irradiation with light; and   stacking formed layers to form a lens from the transmissive material and form a barrel that holds the lens from the light-shielding material.   
     
     
         2 . The method of producing a lens unit according to  claim 1 , further comprising forming, within the barrel, a circular aperture that limits an amount of light passing through the lens from the light-shielding material. 
     
     
         3 . The method of producing a lens unit according to  claim 1 , further comprising forming a flare aperture that limits a region through which light is transmitted on a surface of the lens from the light-shielding material. 
     
     
         4 . The method of producing a lens unit according to  claim 1 , wherein an outline of the lens is formed into a shape similar to an effective region on a surface of the lens, the effective region depending on a shape of an image sensor on which an image is to be formed. 
     
     
         5 . The method of producing a lens unit according to  claim 1 , further comprising forming a cover plate from the transmissive material, the cover plate that forms a flat-plate shape and covers the lens. 
     
     
         6 . A method of producing a lens unit, the method comprising:
 stacking layers including at least one of a transmissive part formed by discharging a transmissive material that allows transmission of light and by curing the discharged transmissive material by irradiation with light, and a light-shielding part formed by discharging a light-shielding material that shields light and by curing the discharged transmissive material by irradiation with light;   forming a lens from the transparent part; and   forming a barrel integrally with the lens from the light-shielding material so that the barrel holds the lens.   
     
     
         7 . A method of producing an imaging apparatus, the method comprising:
 forming a layer by discharging a transmissive material that allows transmission of light and a light-shielding material that shields light in a manner to switch between the transmissive material and the light-shielding material, and by curing the discharged materials by irradiation of light;   stacking formed layers to form a lens from the transmissive material and form a barrel that holds the lens from the light-shielding material; and   arranging an image sensor in a focal position of the lens.   
     
     
         8 . The method of producing an imaging apparatus according to  claim 7 , further comprising:
 measuring optical performance of the lens by the image sensor; and   forming a compensation optical system on the lens based on a result of the measuring.   
     
     
         9 . The method of producing an imaging apparatus according to  claim 7 , further comprising forming a cover plate from the transmissive material, the cover plate that forms a flat-plate shape and covers the lens. 
     
     
         10 . The method of producing an imaging apparatus according to  claim 9 , further comprising:
 measuring optical performance of the lens by the image sensor; and   forming a compensation optical system on the cover plate based on a result of the measuring.